Physical Science Mid-term Review

Which of the following is an example of a chemical change?

• melting of ice

• grilling a hamburger

• tearing paper

• strumming a guitar

Tags

NGSS.MS-PS1-5

NGSS.MS-PS1-2

If a mixture is evenly mixed it is said to be

• chemically bonded.

• homogeneous.

• a compound.

• heterogeneous.

Which type of matter consists of two or more substances that are chemically combined?

• atoms

• elements

• mixtures

• compounds

Matter is defined as anything that

• can be weighed.

• can be seen and touched.

• has mass and takes up space.

• contains kinetic or potential energy.

Tags

NGSS.MS-PS1-5

Compounds and elements are

• pure substances.

• dense.

• always solid.

• mixtures.

Tags

NGSS.MS-PS1-4

An atom is

• the smallest unit of matter that maintains its chemical identity.

• always made of carbon.

• smaller than an electron.

• the smallest unit of a compound.

Tags

NGSS.MS-PS1-1

Which is an example of physical change?

• Bread being toasted.

• Steak being cooked on a BBQ.

• Salt dissolving in a pot of water.

• Ice melting.

Frank has a paper clip. It has a mass of 9g and a volume of 3cm³. What is its density?

• 3 g/cm³
• 1/3 g/cm³
• 27 g/cm³
• 39 g/cm³

Tags

CCSS.HSG.MG.A.2

Fruit Loops, pizza, and Skittles are examples of ____________________ mixtures.

• heterogeneous

• homogeneous

• pure substance

• compound

Coffee, mouthwash, and vinegar are examples of __________________ mixtures.

• heterogeneous

• homogeneous

• pure substance

• compound